Appendix F: Triple Point of Selected Substances
Table F1: Triple Point of Selected Fluids
|
Substance |
Temperature K (°C) |
Pressure kPa (atm) |
|
Acetylene |
192.4 K (−80.7 °C) |
120 kPa (1.2 atm) |
|
Ammonia |
195.40 K (−77.75 °C) |
6.060 kPa (0.05981 atm) |
|
Argon |
83.8058 K (−189.3442 °C) |
68.9 kPa (0.680 atm) |
|
Butane |
134.6 K (−138.6 °C) |
7×10−4 kPa (6.9×10−6 atm) |
|
Carbon dioxide |
216.55 K (−56.60 °C) |
517 kPa (5.10 atm) |
|
Carbon monoxide |
68.10 K (−205.05 °C) |
15.37 kPa (0.1517 atm) |
|
Ethane |
89.89 K (−183.26 °C) |
1.1×10−3 kPa (1.1×10−5 atm) |
|
Ethanol |
150 K (−123 °C) |
4.3×10−7 kPa (4.2×10−9 atm) |
|
Ethylene |
104.0 K (−169.2 °C) |
0.12 kPa (0.0012 atm) |
|
Hexafluoroethane |
173.08 K (−100.07 °C) |
26.60 kPa (0.2625 atm) |
|
Hydrogen |
13.8033 K (−259.3467 °C) |
7.04 kPa (0.0695 atm) |
|
Hydrogen chloride |
158.96 K (−114.19 °C) |
13.9 kPa (0.137 atm) |
|
Isobutane |
113.55 K (−159.60 °C) |
1.9481×10−5 kPa (1.9226×10−7 atm) |
|
Krypton |
115.76 K (−157.39 °C) |
74.12 kPa (0.7315 atm) |
|
Mercury |
234.3156 K (−38.8344 °C) |
1.65×10−7 kPa (1.63×10−9 atm) |
|
Methane |
90.68 K (−182.47 °C) |
11.7 kPa (0.115 atm) |
|
Neon |
24.5561 K (−248.5939 °C) |
43.332 kPa (0.42765 atm) |
|
Nitric oxide |
109.50 K (−163.65 °C) |
21.92 kPa (0.2163 atm) |
|
Nitrogen |
63.18 K (−209.97 °C) |
12.6 kPa (0.124 atm) |
|
Nitrous oxide |
182.34 K (−90.81 °C) |
87.85 kPa (0.8670 atm) |
|
Oxygen |
54.3584 K (−218.7916 °C) |
0.14625 kPa (0.0014434 atm) |
|
Radon |
202 K (−71 °C) |
70 kPa (0.69 atm) |
|
Water |
273.16 K (0.01 °C) |
0.611657 kPa (0.00603659 atm) |
|
Xenon |
161.3 K (−111.8 °C) |
81.5 kPa (0.804 atm) |
Source: Wikipedia contributors. (2021b, June 8). Triple point. Wikipedia. https://en.wikipedia.org/wiki/Triple_point, (retrieved June 10, 2021).
